Dale has recurred on Five-0 as Adam Noshimuri since Season 2, becoming a trusted confidant and resource for the team who McGarrett (Alex O'Loughlin) will now recruit to be a full member. Noshimuri is married to Park's character Kono, who's being written off the show, so it'll be interesting to see how Kono and Noshimuri's relationship will be handled next season.

Rath will play Tani Rey, a former top prospect at the Police Academy who was kicked out. McGarrett recruits her to the team after finding her working as a lifeguard at a hotel pool. Rath is best known for Being Human andNew Girl. Casting for Tani was underway even before Kim and Park officially left.

Koale will play Junior Reigns, a recently discharged Navy SEAL who asks fellow former SEAL McGarrett for a job.